Hydroturbine vacuum-pump



8. SKIDMORE, In.

I-IYDROTURBlNE VACUUM PUMPL' 'nPPucATiou FILED MAR. 9, 1918.

I 1,312,707. Patented Aug. 12, 1919.

im l r 0 BENJAMIN SKIDMORE, JR, OF CHICAGO, ILLINOIS.

HYDRO'I'UBBINE VACUUM-PUMP.

Specification of Letters Patent.

Patented Aug. 12, 1919.-

Application filed March 9, 1919. Serial in. 221,861.

To all whom it may concern:

Be it known that L'BENJAMIN SKIDMORE, Jr., a citizen of the United $tates, residing 'at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Hydroturbine Vacu- I jects as will'ap ear, the invention consists in the features 0 novelty in substantially the construction, combination and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying drawing',iilustrating this in:

' "vention and in which,

Figure l is a vertical sectional view of an improved apparatus of this character constructed in accordance with the principles of this invention. l V Fig. 2 is a horizontal-sectional view taken on line 22, Fi 1.

Fig. 3 is an en rged detail sectional view of one: of the nozzles.

I Referring more particularly to the drawing, the numeral 1( desi ates-generally a tank or receptacle prefers. ly provided with a top 11, having an outlet opening 12 from which a pipe 13 leads. This tank or receptacle. may e supported in an desired or suitable manner and may be of any desired size and construction and is adapted to hold a-' uantity of li uid 14.

rranged wit in the receptacle is a rotary element. designated generally by the reference numeral 15 and mwhich element.

there is provided a chamber 16; having an inlet opening 17 and a plurality of outlet openings 18, the latter bein arranged preferably to extend through 1; e periphery of the element. These outlet openin s may be of any desired size, and connecte element so as to extend over each of the openings 18 is a hood 19, of any desired length having both of its ends 20; 21 open. an the outlet opening 18 has communicawith the tion with the hood preferably intermediate the ends of the latter. The end 20 of the hood is shaped to form an injector 22 which extends into the hood andterminates preferabl adjacent the opening 18, so that when the e ement 15 is rotated in the direction indicated by the arrow in Fig. 2, the liquid in the receptacle 10 will be injected into the hood by passing first through the nozzle portion 22 through the reduced outlet 23 and then out of the opposite end of the hood. The liquid will flow into the nozzle 22, and will be discharged through the outlet end 23 in 'theform of a spray and will substantially fill the hood, thereby operating as an as irator which will entrain the fluid throug the openings 18 of the chamber 16. The fluid flowing through the nozzle 22 and the fluid flowing through the openings 18 will commingle and be discharged therefrom through the outlet end 21 of the hood.

The extremity of the injector 22 is reduced as at 23to form a narrow-edge, preferably terminating adjacent the opening 18, so that the suction or the entrainment of the fluid from the chamber by the liquid will not be interfered with. Connected with the inlet opening 17 of the chamber 16 is a suitable pipe 24,, in which it is desired to create a suction.

Within the chamber 16 are a series of wings or partitions 25 one of which extends from the peri' hery of the chamber 16 adjacent each 0 the. openings 18, and these wings extend toward the center of the chamber and terminate short of each other and act as impellers for assisting in impelling or driving the fluid from the chamber 16 to the outlet 18 as the element is rotated. These impellers 25 may be of any desired shape and of any desired length.

The element 15 is rotihted by means of a shaft 26 connected thereto and which shaft passes through a suitable bushing 27 and is connected with a suitable motor 28 by means of a suitable flexible connection 29.

In operation, it will be apparent that when the element 15 is rotated in the direction of the arrow, theliquid in the tank or receptacle 10, being held against a rotary motion by means of suitable baffles 30, will flow through the hoods 19 with'such force, that a. suction will be created. in the pipe .24 through the chamber 16 and out of the outlet 18, the degree .of suction being of course controlled by the speed of rotation of the element 15. The fluid which is drawn into the chamber 16 will be thus discharged into the receptacle 10 and into the body of the liquid 14 therein, so that the fluid which is not condensed will rise through the liquid 14 into the upper part of the receptacle 10 and will then pass through the outlet 12 and through the pipe 13. Obviously, if desired, a suitable valve may be provided in the pipe 13 to retain the fluid Within the receptacle 10 to be compressed therein.

A suitable clean-out valve 31 may also be provided in the bottom of the receptacle 10.

With this improved construction, it will be manifest that a very powerful suction pump will be produced and which suction will be manifested in a suction pipe with which the element has connection.

The interior of the hood 19 may, if desired, be slightly reduced in diameter intermediate its ends and beyond the injector 22, so as to increase the efiiciency of the device.

What is claimed as new is:

1. An apparatus 6f the character described embodying a submerged rotary element circular in cross section-having a fluid chamber therein, said chamber being provided with an inlet and having an outlet through the periphery of the .element, a hood connected with the periphery of element and extending across said outlet, said hood embodying-a conical nozzle adjacentone end of the hood, the larger portion of,

the nozzle being disposed'adjacent the lead-- ing end of the hoodand the smaller portion terminating within the. hood and at a con siderable distance from the trailing end of the hood, whereby when the element is rotated the submergin liquid forcedthro ugh the nozzle will be discharged into the hood in the form of a spray and substantially fill said hood to create a suction through the said outlet of the said element, and means for rotating the said element.

2. An a paratus of the character described emiiodying a submerged rotary element circular in cross section and havingra hood, the larger portion of the nozzle being disposed adjacent the leading end of the hood and the smaller portion-"terminating Within the hood and at a considerable dis tance from the trailing end of the hood, whereby when the element is rotated the scribed embodying a submerged rotary elementhaving a fluid chamber therein provided with an inlet and an outlet, a hood connected with the element and extending across said outlet, said hood embodying a conical nozzle adjacent one end of the hood, the larger portion of the nozzle being dis- PUnP-d adjacent the leading end of the hood and thesmaller portion terminating withi the hooglimd at a considerable distance from the trailing end of the hood, whereby when the element is rotated the submerging liquid forced through the nozzle will be discharged into the hood 'in the form of a spray and substantially fill said hood to create a suction through the said outlet of the said element, means for rotating the said element, and an impeller Wing or blade within the chamber, said impeller extending from the point of communication of the chamber with the said hood toward and terminating in proximity to the center of the chamber.

4. An apparatus of the character desrribed'embodying a submerged rotary element substantially circular in crosssection and having a fluid chamber therein, said chamber having an inlet and being provided with a-plurality of outlets, said 0 itlets opening through the periphery of the element, hoods individual to the outlets and connected directly with the periphery of the element, each hood extending aboutthe said periphery, said hoods each embodying a conical nozzle with the larger portion adjacent the leading end of the hood, and the smaller portion of thenozzle terminating within the hood and at a considerable distance from the trailing end of the hood whereby .When the element is rotated the submerging liquid forced through the nozzle will be discharged into the hood in the form' of a spray and substantially fill the hood to create a suction through the respective outlets of the said element, and means for rotating the element, a

In testimony whereof I have si ed my name to this specification, on this 6t 1 day of March, A. B11918.

BENJAMIN SKIDMORE, JR. 

